NFS: Add tracepoints for debugging generic file create events

Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>

1 files changed, 70 insertions, 0 deletions

diff --git a/fs/nfs/nfstrace.h b/fs/nfs/nfstrace.h
index fba194b70027..2963a050ceff 100644
--- a/fs/nfs/nfstrace.h
+++ b/fs/nfs/nfstrace.h
@@ -352,6 +352,76 @@ TRACE_EVENT(nfs_atomic_open_exit,
                 )
 );
 
+TRACE_EVENT(nfs_create_enter,
+                TP_PROTO(
+                        const struct inode *dir,
+                        const struct dentry *dentry,
+                        unsigned int flags
+                ),
+
+                TP_ARGS(dir, dentry, flags),
+
+                TP_STRUCT__entry(
+                        __field(unsigned int, flags)
+                        __field(dev_t, dev)
+                        __field(u64, dir)
+                        __string(name, dentry->d_name.name)
+                ),
+
+                TP_fast_assign(
+                        __entry->dev = dir->i_sb->s_dev;
+                        __entry->dir = NFS_FILEID(dir);
+                        __entry->flags = flags;
+                        __assign_str(name, dentry->d_name.name);
+                ),
+
+                TP_printk(
+                        "flags=%u (%s) name=%02x:%02x:%llu/%s",
+                        __entry->flags,
+                        show_open_flags(__entry->flags),
+                        MAJOR(__entry->dev), MINOR(__entry->dev),
+                        (unsigned long long)__entry->dir,
+                        __get_str(name)
+                )
+);
+
+TRACE_EVENT(nfs_create_exit,
+                TP_PROTO(
+                        const struct inode *dir,
+                        const struct dentry *dentry,
+                        unsigned int flags,
+                        int error
+                ),
+
+                TP_ARGS(dir, dentry, flags, error),
+
+                TP_STRUCT__entry(
+                        __field(int, error)
+                        __field(unsigned int, flags)
+                        __field(dev_t, dev)
+                        __field(u64, dir)
+                        __string(name, dentry->d_name.name)
+                ),
+
+                TP_fast_assign(
+                        __entry->error = error;
+                        __entry->dev = dir->i_sb->s_dev;
+                        __entry->dir = NFS_FILEID(dir);
+                        __entry->flags = flags;
+                        __assign_str(name, dentry->d_name.name);
+                ),
+
+                TP_printk(
+                        "error=%d flags=%u (%s) name=%02x:%02x:%llu/%s",
+                        __entry->error,
+                        __entry->flags,
+                        show_open_flags(__entry->flags),
+                        MAJOR(__entry->dev), MINOR(__entry->dev),
+                        (unsigned long long)__entry->dir,
+                        __get_str(name)
+                )
+);
+
 #endif /* _TRACE_NFS_H */
 
 #undef TRACE_INCLUDE_PATH